In my opinion 3 days is enough but if you want you can increase one more day. I think you need to concentrate on your meal plan. Here is a meal plan for muscle building, I hope it will help you.

Calories

A caloric surplus is the #1 dietary requirement for building muscle.
Specifically, the ideal daily caloric surplus for men is 250 additional calories per day. For women, it’s 125 additional calories per day.
The ideal caloric surplus will cause you to gain weight at the ideal rate. For men, that ideal weight gain rate is about 0.5 pound per week (2lbs per month). For women, it’s about 0.25 pound per week (1lb per month).
Weigh yourself at least once per week first thing in the morning on an empty stomach and keep track of your weight (or, weigh in every morning and take the weekly average). If it’s increasing at the ideal rate, you’re perfect. If it isn’t, adjust your daily calorie intake up or down until it is.

Protein

The ideal daily protein intake for men with the primary goal of building muscle is 0.8-1.5 grams of protein per pound of body weight. For women with the primary goal of building muscle, it’s 0.8-1.2 grams of protein per pound of body weight.
This protein intake should typically come mostly from high quality whole food sources (chicken, meat, fish, etc.) and if needed or preferred, protein powder.

Fat

The ideal daily fat intake is between 20-30% of your total calorie intake, with an even 25% probably being pretty perfect in most cases.
This fat intake should primarily come from monounsaturated and polyunsaturated sources (nuts, olive oil, fish/fish oil, etc.). Saturated fat should account for no more than 1/3 of your total fat intake, and trans fat should be avoided completely.
An added emphasis should be placed on getting a sufficient amount of your essential fatty acids, specifically omega-3 (which is easiest to get by taking a fish oil supplement).